U.S. patent application number 16/568919 was filed with the patent office on 2021-02-18 for structured light-emitting module.
The applicant listed for this patent is TRIPLE WIN TECHNOLOGY(SHENZHEN) CO.LTD.. Invention is credited to CHUN-YAO HUANG, CHENG-AN LIN.
Application Number | 20210051246 16/568919 |
Document ID | / |
Family ID | 1000004348210 |
Filed Date | 2021-02-18 |
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United States Patent
Application |
20210051246 |
Kind Code |
A1 |
HUANG; CHUN-YAO ; et
al. |
February 18, 2021 |
STRUCTURED LIGHT-EMITTING MODULE
Abstract
A structured light-emitting module includes a lens housing, a
light-emitting element, a lens mounted on the lens housing, and a
digital light processing sensor. The light-emitting element is
mounted on an inner side wall of the lens housing. The digital
light processing sensor is mounted on an inner side wall of the
lens housing and is configured to reflect light emitted by the
light-emitting element to the lens for transmission.
Inventors: |
HUANG; CHUN-YAO; (New
Taipei, TW) ; LIN; CHENG-AN; (New Taipei,
TW) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
TRIPLE WIN TECHNOLOGY(SHENZHEN) CO.LTD. |
Shenzhen |
|
CN |
|
|
Family ID: |
1000004348210 |
Appl. No.: |
16/568919 |
Filed: |
September 12, 2019 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
H04N 5/2254 20130101;
H04N 5/2252 20130101; G02B 26/0833 20130101; H04N 5/2253
20130101 |
International
Class: |
H04N 5/225 20060101
H04N005/225; G02B 26/08 20060101 G02B026/08 |
Foreign Application Data
Date |
Code |
Application Number |
Aug 14, 2019 |
CN |
201910750977.8 |
Claims
1. A structured light-emitting module comprising: a lens housing; a
light-emitting element; a lens mounted on the lens housing; and a
digital light processing sensor; wherein: the light-emitting
element is mounted on an inner side wall of the lens housing; the
digital light processing sensor is mounted on an inner side wall of
the lens housing and is configured to reflect light emitted by the
light-emitting element to the lens for transmission.
2. The structured light-emitting module of claim 1, wherein: the
lens housing comprises a bottom portion, a main body, and a lens
portion; the lens portion is located on a side of the main body
opposite the bottom portion; the main body is located between the
bottom portion and the lens portion; the main body, the bottom
portion, and the lens portion cooperatively define a receiving
cavity; the lens is mounted on the lens portion; the digital light
processing sensor is mounted on the bottom portion; and the
light-emitting element is mounted on an inner side wall of the main
body.
3. The structured light-emitting module of claim 2, wherein: the
lens portion defines an opening communicating with the receiving
cavity; and the lens is mounted in the opening.
4. The structured light-emitting module of claim 2, wherein: the
lens housing comprises a perpendicular portion and a slanted
portion; the perpendicular portion is coupled to the bottom
portion; the slanted portion is coupled to the lens portion; the
slanted portion faces the bottom portion; and the light-emitting
element is mounted on the slanted portion.
5. The structured light-emitting module of claim 1, wherein: the
light-emitting element is fixed to the inner side wall of the
housing by solder or glue.
6. The structured light-emitting module of claim 2, further
comprising a control circuit, wherein: the control circuit is
located inside the bottom portion; and the light-emitting element
and the digital light processing sensor are electrically coupled to
the control circuit.
7. The structured light-emitting module of claim 6, wherein: a
laser direct structuring line is formed on the inner side wall of
the main body; and the light-emitting element is electrically
connected to the control circuit via the laser direct structuring
line.
8. A structured light-emitting module comprising: a lens housing; a
light-emitting element; a lens mounted on the lens housing; and a
digital light processing sensor; wherein: the lens housing
comprises a bottom portion; an inner side wall of the lens housing
comprises a slanted portion; the light-emitting element is mounted
on the slanted portion of the lens housing and faces the digital
light processing sensor at an angle; the digital light processing
sensor is mounted on the bottom portion of the lens housing and is
configured to reflect light emitted by the light-emitting element
to the lens for transmission.
9. The structured light-emitting module of claim 8, wherein: the
lens housing further comprises a main body and a lens portion; the
lens portion is located on a side of the main body opposite the
bottom portion; the main body is located between the bottom portion
and the lens portion; the main body, the bottom portion, and the
lens portion cooperatively define a receiving cavity; and the lens
is mounted on the lens portion;
10. The structured light-emitting module of claim 9, wherein: the
lens portion defines an opening communicating with the receiving
cavity; and the lens is mounted in the opening.
11. The structured light-emitting module of claim 10, wherein: the
light-emitting element is fixed to the inner side wall of the
housing by solder or glue.
12. The structured light-emitting module of claim 11, further
comprising a control circuit, wherein: the control circuit is
located inside the bottom portion; and the light-emitting element
and the digital light processing sensor are electrically coupled to
the control circuit.
13. The structured light-emitting module of claim 12, wherein: a
laser direct structuring line is formed on the inner side wall of
the main body; and the light-emitting element is electrically
connected to the control circuit via the laser direct structuring
line.
Description
FIELD
[0001] The subject matter herein generally relates to structured
light-emitting modules, and more particularly to a structured
light-emitting module having a reduced size.
BACKGROUND
[0002] Generally, a face recognition function of an electronic
device uses a structured light-emitting module to emit light. The
structured light-emitting module of the related art generally uses
a reflective prism structure to transmit light emitted by a
light-emitting element to a lens of the light-emitting module.
However, due to the reflective prism structure, a size of the
structured light-emitting module may be difficult to reduce.
BRIEF DESCRIPTION OF THE DRAWINGS
[0003] Implementations of the present disclosure will now be
described, by way of embodiments, with reference to the attached
figures.
[0004] FIG. 1 is an assembled, isometric view of an embodiment of a
structured light-emitting module.
[0005] FIG. 2 is an exploded, isometric view of the structured
light-emitting module in FIG. 1.
[0006] FIG. 3 is a cross-sectional view taken along line in FIG.
1.
DETAILED DESCRIPTION
[0007] It will be appreciated that for simplicity and clarity of
illustration, where appropriate, reference numerals have been
repeated among the different figures to indicate corresponding or
analogous elements. Additionally, numerous specific details are set
forth in order to provide a thorough understanding of the
embodiments described herein. However, it will be understood by
those of ordinary skill in the art that the embodiments described
herein can be practiced without these specific details. In other
instances, methods, procedures and components have not been
described in detail so as not to obscure the related relevant
feature being described. The drawings are not necessarily to scale
and the proportions of certain parts may be exaggerated to better
illustrate details and features. The description is not to be
considered as limiting the scope of the embodiments described
herein.
[0008] Several definitions that apply throughout this disclosure
will now be presented.
[0009] The term "coupled" is defined as connected, whether directly
or indirectly through intervening components, and is not
necessarily limited to physical connections. The connection can be
such that the objects are permanently connected or releasably
connected. The term "substantially" is defined to be essentially
conforming to the particular dimension, shape, or other word that
"substantially" modifies, such that the component need not be
exact. For example, "substantially cylindrical" means that the
object resembles a cylinder, but can have one or more deviations
from a true cylinder. The term "comprising" means "including, but
not necessarily limited to"; it specifically indicates open-ended
inclusion or membership in a so-described combination, group,
series and the like.
[0010] FIGS. 1 and 2 show an embodiment of a structured
light-emitting module 100 including a lens housing 10, a lens 20, a
light-emitting element 30, and a digital light processing sensor
(DLP sensor) 40. The lens 20 is fixed in an opening 131 of the lens
housing 10 to form a light transmission opening. The light-emitting
element 30 is fixed to an inner side wall of the lens housing 10.
The DLP sensor 40 is located on an inner bottom wall of the lens
housing 10 for reflecting light emitted by the light-emitting
element 30 to the lens 20.
[0011] The lens housing 10 includes a bottom portion 11, a main
body 12, and a lens portion 13. The lens portion 13 is located on a
side of the main body 12 opposite to the bottom portion 11. The
main body 12 is substantially a hollow cuboid. In one embodiment,
the main body 12 is formed by four rectangular plates connected
end-to-end. The main body 12 is located between the bottom portion
11 and the lens portion 13 and surrounds the bottom portion 11 and
the lens portion 13 to form a receiving cavity 14. The receiving
cavity 14 is configured to receive the light-emitting component 30,
the DLP sensor 40, and other components not described herein. The
lens portion 13 defines the opening 131, and the opening 131
communicates with the receiving cavity 14. The lens 20 is mounted
in the opening 131 of the lens portion 13.
[0012] As shown in FIG. 3, the light-emitting element 30 is mounted
on an inner side wall of the main body 12. Specifically, the inner
side wall of the main body 12 includes a perpendicular portion 121
and a slanted portion 122. The perpendicular portion 121 is
connected substantially perpendicularly to the bottom portion 11.
The slanted portion 122 is connected to the lens portion 13 and
faces the bottom portion 11 at an angle. The light-emitting element
30 is mounted on the slanted portion 122. Specifically, the
light-emitting element 30 may be fixed by solder or glue. The
light-emitting element 30 may employ a light-emitting diode (LED),
a vertical cavity surface emitting laser (VCSEL), or the like.
[0013] The structured light-emitting module 100 further includes a
control circuit 50. The control circuit 50 is located inside the
bottom portion 11. In another embodiment, a circuit board of the
control circuit 50 is used as the bottom portion 11 of the lens
housing 10. A laser direct structuring (LDS) line 60 is formed on
the inner side wall of the main body 12. The light-emitting element
30 is electrically connected to the control circuit 50 via the LDS
line 60.
[0014] The DLP sensor 40 is mounted on the bottom portion 11 and is
electrically coupled to the control circuit 50. The control circuit
50 is configured to control a tilt angle and a deflection time of a
digital micro-mirror device (DMD) on the DLP sensor 40 to reflect
light having different optical paths emitted by the light-emitting
element 30 to the lens 20 to transmit through the lens 20 to an
object.
[0015] Compared with the related art, the light-emitting element 30
is mounted on the inner side wall of the lens housing 10, and the
DLP sensor 40 mounted on the bottom portion 11 changes an outgoing
direction of the light emitted by the light-emitting element 30.
Thus, a reflective prism in the related art is omitted, and a
structure of the structured light-emitting module 100 is further
miniaturized.
[0016] The embodiments shown and described above are only examples.
Even though numerous characteristics and advantages of the present
technology have been set forth in the foregoing description,
together with details of the structure and function of the present
disclosure, the disclosure is illustrative only, and changes may be
made in the detail, including in matters of shape, size and
arrangement of the parts within the principles of the present
disclosure up to, and including, the full extent established by the
broad general meaning of the terms used in the claims.
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